Improvement



LA BAW &. CAMPBELL.

Carriage-Spring. I

Patented, Aug 19, 1862.

N. PETERS, PHOYO-LITHOGRAPHER, WASHWGTON, D. 04

UNITED STATES PATENT OFF CE.

GEORGE W. LA BAW AND PETER F. CAMPBELL, OF JERSEY CITY, NEW

' JERSEY.

lMPROVEMENT lN CARRIAGE-SPRINGS.

Specification forming part of Letters Patent No. 36,220, dated August'19, 1862.

, exact description of our said invention, refereuce being had to the annexed drawings, making part of this specification, wherein Figure 1 is an elevation of our spring. Fig. 2 is an inverted plan of the slide-bar at one end, and Fig. 3 shows the clip to the axle.

Similar marks of reference denote the same parts.

Our invention consists in a combination of toggle-joint bars with a sliding bar and compressible spring, the parts beingarranged as set forth,and applied between the axle and the body of the vehicle in such a manner that the toggle-joint bars through'the agency of said sliding bar compress the spring endwise. By this means we are able to employ arigid spring, such as india-rubber, and obtain an easy-riding vehicle with the amount ofspringing movement usually required.

In the drawings, or represents a portion of the axle. b is the side rail or bolster of a wagon or other vehicle.

c is a bar with an eye at one end taking a bolt through the strap or clip (1, that is attached to b. The other end of this bar a is formed as a fork, c, that grasps the axle a. f isa clip on the plate Z, and the other end of this bar h,

passes through the step 70 for the springm, thence through said spring in, and terminating with the cap n. It will nowbe seen that the axle a in use is drawn along by the bar 0, and

this bar only acts as a radius, and in connection With the bar gforms a toggle that slides the bar h along, and thereby compresses the spring m, and the amount of motion allowed to the vehicle will depend on the strength of the spring at and angle between the bars 9 and 0 com-- pared with the weight.

By providing a not at the end of the bar h V the spring in may be more or less compressed at pleasure and the amount of motion under a given pressure regulated. This spring at may be of rubber, as shown, or a spiral or other spring may be employed in place thereof.

\Vhen the toggle-bars c and g straighten under a heavy weight, the upper side of the fork e will take the rubber spring at against its side,

and in that capacity said spring will act as a buffer. The upper side of this fork 6 may be made concave, as in Fig. 3', to take the side of said spring m.

What we claim, and desire to secure by Letters Patent, is- I The toggle-bars a and g, fitted as set forth}; in combination with the slide-bar h and spring m, in the manner and for the purposes spec 11L fied.

In witness whereof we have hereunto set our signatures this 14th day of July, 1862. GEORGE W. LA BAW. PETER F. CAMPBELL. Witnesses:

LEMUEL WV. SERRELL, THos. GEo. HAROLD. 

